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An ultraviolet continuous zoom telescopic optical system

An optical system and a positive focal power technology, applied in the field of ultraviolet telescopic optical systems, can solve problems such as inability to achieve continuous zoom, small zoom ratio, increased processing and detection difficulties, etc., to achieve consistent system resolution, zoom The effect of large range, easy processing and detection

Active Publication Date: 2022-04-08
NANJING UNIV OF INFORMATION SCI & TECH
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Problems solved by technology

[0007] The existing technology mainly has the following disadvantages: in order to improve the zoom ratio of the ultraviolet zoom system, aspherical or binary diffractive optical elements are used, which increases the difficulty of processing and detection; some ultraviolet optical systems use two-speed zoom, the zoom ratio is small, and Unable to achieve continuous zoom

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  • An ultraviolet continuous zoom telescopic optical system
  • An ultraviolet continuous zoom telescopic optical system
  • An ultraviolet continuous zoom telescopic optical system

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Embodiment Construction

[0037] Such as figure 1 , a kind of ultraviolet continuous zoom telescopic optical system described in the present embodiment comprises front fixed lens group 1, zoom lens group 2, compensating lens group 3, aperture stop 513 and rear fixed lens group 1 that are arranged sequentially from object space to image space Lens group 4; the front fixed lens group 1 includes a first lens 101 and a second lens 102 arranged sequentially from the object space to the image space, the first lens 101 is a convex-concave lens with negative refractive power, and the second lens 102 is a double lens with positive refractive power Convex lens, the front fixed lens group 1 has positive refractive power; the variable power lens group 2 includes the third lens 203, the fourth lens 204 and the fifth lens 205 which are arranged in sequence from the object space to the image space, and the third lens 203 has negative optical power double-concave lens, the fourth lens 204 is a convex-concave lens with...

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Abstract

The invention discloses an ultraviolet continuous zoom telescopic optical system, which comprises a front fixed lens group, a variable power lens group, a compensation lens group and a rear fixed lens group arranged sequentially from the object space to the image space, and the aperture diaphragm is arranged on the compensation lens group and the rear fixed lens group, and close to the rear fixed lens group. The invention can realize continuous zooming, the range of the focal length is 120 mm to 480 mm, the zooming range is large, and the consistency of the system resolution and the stability of the imaging performance are realized under different focal lengths; a fixed F number and large zoom ratio are provided. Ultraviolet telephoto optical system, the F number of the system is 4.5, and the zoom ratio is 4; all lenses are spherical lenses.

Description

technical field [0001] The invention relates to an ultraviolet telescopic optical system, in particular to an ultraviolet continuous zoom telescopic optical system. Background technique [0002] With the continuous development of ultraviolet detection technology, the ultraviolet band, as an important detection spectral window, has broad application prospects in civil, industrial and military fields, and can be used in long-distance and large-scale high-voltage corona detection, missile Position alarm and aerospace remote sensing and other occasions. Most of the existing ultraviolet optical systems are fixed-focus optical systems, which make it difficult to detect ultraviolet targets at different positions and distances. Compared with the ultraviolet fixed-focus optical system, the ultraviolet zoom optical system can realize large-area target search and small-area target positioning at the same time. [0003] Patent application CN102621677A discloses an ultraviolet zoom ima...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B15/14G02B13/02
CPCG02B15/144113G02B13/02
Inventor 叶井飞马梦聪朱润徽丁天宇宋真真曹兆楼
Owner NANJING UNIV OF INFORMATION SCI & TECH
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